Lock.



A. STAAB.

Loox.

APPLICATION FILED JAN.23, 1914. 1, 1 00,449.

Patented June 16, 1914.

ALFRED STAAB, OF MILWAUKEE', WISCONSIN.

LOCK.

moonen.

Speccaton of Letters Patent.

Patented June 16, 1914.

Application filed January 23, 1914. Serial No. 814,013.

To @ZZ who-m it may concern Be it known that I, ALFRED STAAB, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Locks; and l do hereby declare that the following is a full, clear, and exact description thereof.

My invention consists in what is herein particularly set forth with reference to ther accompanying drawings and pointed out in the claims of this specification, its object being to readily compensate for displacement of mortise-lock latches and bolts due to settling of doors to which such locks are applied or to the checking of the door-frames to which the keepers of the locks are secured, the compensation being effected by means of readily adjustable members of said keepers, whereby marring of said doors and frames is avoided without employing skilled labor.

Figure 1 of the drawing represents a front elevation of a keeper of a mortise lock having an adjustable member in accordance with my invention; Fig. 2, a rear elevation of the same; Fig. 3, a sectional view on the plane indicated by line 8 3 in Figs. 1 and 4, and Fig. 4, a horizontal sectional view on the plane indicated by line 4-4 in Figs. 3 and 4.

Referring by numerals to the drawings, 5 indicates a plate attachable to a jamb 6 of a door frame and provided with a striking-liange 5 for the latch and bolt of a mortise-lock applied to a door in hinge connection with such frame. The plate is slotted for the greater portion of its length and its front side is longitudinally recessed. Adjacent to its ends the plate is provided with countersunk apertures for screws 7 by which it is fastened to the jamb aforesaid. rlhe sides of the slot in the plate 5 are beveled to match corresponding bevels of another plate 8 slidable in said slot and provided with keeper-apertures 9 and 10 for the latch and bolt of the mortise lock aforesaid, and still another plate 11, provided with similar apertures 9', 10, is slidable in the front recess of the main plate 5. The plates 8 and 11 are connected by a screw 12,

and the apertures of one are in register with those of the other. The screw 12 being loosened, the plates 8 and 11 may be vertically adjusted to raise or lower their registering apertures to aline with the latch and bolt of the aforesaid lock, and by tightening said screw said plates are rigidly Secured in adjusted position, owing to the wedging of the one 8 in the slot of the main plate 5. The several plates, in the assemblage specified, constitute the keeper of a mortise-lock, and the connected plates S and 11 together form an adjustable member of said keeper, it being preferable, as herein shown to have the apertures in the back plate 8 of said adjustable member of less area than those in the front plate of the same member, in order that all of the strain of the latch and bolt of the lock may be exerted upon said back plate and the main plate 5 in which it is set. For locks devoid of a dead or key bolt, the bolt-apertures in plates 8 and 11 of the keeper may be omitted.

I claim:

1. The keeper of a mortise-lock comprising a longitudinally slotted main plate, a back keeper plate adjustable in the slot of the main plate, and a front keeper-plate connected with said back keeper-plate and slidable therewith on said main plate.

2. The keeper of a mortise-lock comprising a longitudinally slotted and forwardly recessed main plate, a back keeper plate adjustable in the slot of the main plate, and a front keeper-plate slidable in the slot of said main plate and connected to said back keeper-plate with which it is movable.

3. The keeper of a mortise-lock comprising a longitudinally slotted main plate, a back keeper-plate in wedge-fit adjustable engagement with the slot of the main plate, a front keeper-plate slidable on said main plate, and a screw connecting the keeper plates, tightening of the screw serving to secure said keeper-plates therewith in adjusted position.

4. The keeper of a mortise lock comprising a longitudinally slotted main plate, an apertured back plate adjustable in the main plate slot, and an apertured front plate connected to the back plate and slidable therehave hereunto set my hand at Milwaukee in with on said main plate, there being a registhe county of Milwaukee and State of VVistration of the back and front plate apertures eonsin in the presence of two Witnesses. and the back plate aperture of a registering ALFRED STAAB.

5 pair of less area than the Corresponding Witnesses: front plate aperture. N. E. OLIPHANT, In testimony that I claim the foregoing I M. E. DOWNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

